com.googlecode.psiprobe.beans.JBossResourceResolverBean.java Source code

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Here is the source code for com.googlecode.psiprobe.beans.JBossResourceResolverBean.java

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/*
 * Licensed under the GPL License.  You may not use this file except in
 * compliance with the License.  You may obtain a copy of the License at
 *
 *     http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 *
 * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */
package com.googlecode.psiprobe.beans;

import com.googlecode.psiprobe.model.ApplicationResource;
import com.googlecode.psiprobe.model.DataSourceInfo;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.naming.NamingException;
import javax.sql.DataSource;
import org.apache.catalina.Context;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/**
 * An Adaptor to convert information retrieved from JBoss JMX beans into
 * internal resource model.
 * 
 * @author Vlad Ilyushchenko
 * @author Mark Lewis
 */
public class JBossResourceResolverBean implements ResourceResolver {

    protected Log logger = LogFactory.getLog(getClass());

    public MBeanServer getMBeanServer() {
        for (Iterator it = MBeanServerFactory.findMBeanServer(null).iterator(); it.hasNext();) {
            MBeanServer server = (MBeanServer) it.next();
            if ("jboss".equals(server.getDefaultDomain()) || "DefaultDomain".equals(server.getDefaultDomain())) {
                return server;
            }
        }
        return null;
    }

    public boolean supportsPrivateResources() {
        return false;
    }

    public boolean supportsGlobalResources() {
        return true;
    }

    public boolean supportsDataSourceLookup() {
        return false;
    }

    public List getApplicationResources() throws NamingException {

        List resources = new ArrayList();

        MBeanServer server = getMBeanServer();
        if (server != null) {
            try {
                Set dsNames = server.queryNames(new ObjectName("jboss.jca:service=ManagedConnectionPool,*"), null);
                for (Iterator it = dsNames.iterator(); it.hasNext();) {
                    ObjectName managedConnectionPoolOName = (ObjectName) it.next();

                    ApplicationResource resource = new ApplicationResource();
                    resource.setName(managedConnectionPoolOName.getKeyProperty("name"));
                    resource.setType("jboss");
                    String criteria = (String) server.getAttribute(managedConnectionPoolOName, "Criteria");
                    if ("ByApplication".equals(criteria)) {
                        resource.setAuth("Application");
                    } else if ("ByContainerAndApplication".equals(criteria)) {
                        resource.setAuth("Both");
                    } else {
                        resource.setAuth("Container");
                    }
                    DataSourceInfo dsInfo = new DataSourceInfo();
                    dsInfo.setMaxConnections(
                            ((Integer) server.getAttribute(managedConnectionPoolOName, "MaxSize")).intValue());
                    dsInfo.setEstablishedConnections(
                            ((Integer) server.getAttribute(managedConnectionPoolOName, "ConnectionCount"))
                                    .intValue());
                    dsInfo.setBusyConnections(
                            ((Long) server.getAttribute(managedConnectionPoolOName, "InUseConnectionCount"))
                                    .intValue());

                    ObjectName connectionFactoryOName = new ObjectName(
                            "jboss.jca:service=ManagedConnectionFactory,name=" + resource.getName());
                    Element elm = (Element) server.getAttribute(connectionFactoryOName,
                            "ManagedConnectionFactoryProperties");

                    if (elm != null) {
                        NodeList nl = elm.getChildNodes();
                        for (int i = 0; i < nl.getLength(); i++) {
                            Node n = nl.item(i);
                            Node na = n.getAttributes().getNamedItem("name");
                            if (na != null) {
                                if ("ConnectionURL".equals(na.getNodeValue())) {
                                    dsInfo.setJdbcURL(n.getFirstChild().getNodeValue());
                                }

                                if ("UserName".equals(na.getNodeValue())) {
                                    dsInfo.setUsername(n.getFirstChild().getNodeValue());
                                }

                                //
                                // JMS datasource
                                //
                                if ("JmsProviderAdapterJNDI".equals(na.getNodeValue())) {
                                    dsInfo.setJdbcURL(n.getFirstChild().getNodeValue());
                                    resource.setType("jms");
                                }
                            }
                        }
                    }

                    dsInfo.setResettable(true);

                    resource.setDataSourceInfo(dsInfo);
                    resources.add(resource);
                }
            } catch (Exception e) {
                //
                logger.fatal("There was an error querying JBoss JMX server:", e);
            }
        }
        return resources;
    }

    public List getApplicationResources(Context context) throws NamingException {
        return new ArrayList();
    }

    public boolean resetResource(Context context, String resourceName, ContainerWrapperBean containerWrapper)
            throws NamingException {
        try {
            ObjectName poolOName = new ObjectName("jboss.jca:service=ManagedConnectionPool,name=" + resourceName);
            MBeanServer server = getMBeanServer();
            if (server != null) {
                try {
                    server.invoke(poolOName, "stop", null, null);
                    server.invoke(poolOName, "start", null, null);
                    return true;
                } catch (Exception e) {
                    logger.error("Could not reset resource \"" + resourceName + "\"", e);
                }
            }
            return false;
        } catch (MalformedObjectNameException e) {
            throw new NamingException("Resource name: \"" + resourceName + "\" makes a malformed ObjectName");
        }
    }

    public DataSource lookupDataSource(Context context, String resourceName, ContainerWrapperBean containerWrapper)
            throws NamingException {
        throw new UnsupportedOperationException("This feature has not been implemented for JBoss server yet.");
    }

    public List getApplicationResources(Context context, ContainerWrapperBean containerWrapper)
            throws NamingException {
        throw new UnsupportedOperationException("Not supported yet.");
    }
}